Improvement in clod-crushers



soil, atone and the same operation.

UNITED STATES Jon M. GROGKETT,

PATENT QFFIGE.

OF DALLAS, TEXAS. I

iMPROVEMENl' IN CLOD-CRUSHERS.

Specification forming part of Letters Patent No. 177,476, dated May 16,1876; application filed April 15, 1876.

To all whom it may concern:

Be it known that I, JOHN M. GROGKETT, of the city and county of Dallasand State of Texas, have invented a new and Improved Drag and GlodCrusher; and I do hereby declare that the following is a full, clear,and exact description of the same.

The object of my invention is to supply a land-drag and clod-crusherthat will efleotually crush the clods, level the land, and packI the tis composed of flat thin bars of iron, steel, or other suitablematerial, each of which is curved twice in such manner that the curvescome to the ground at such an angle as to slide upon clods and pressand'rub them somewhat after the manner of the foot and shoesole in theact of walking, thus effectually breaking or crushing them. The bars areplaced so that the curves alternate, each being in advance or rear ofthe curve of the contiguous bar, the object being that in case a clodshall be pushed aside by the onebar, it will have room to fall under thenext bar, and so on throughout the whole width of the drag.

In the accompanying drawing, forming part of this specification, Figurel is a plan view, and Fig. 2 a sectional elevation, of my improved drag;Fig. 3, a front view of a fragment of the drag.

The bars A B are curved upward in the middle, and also at their frontends, which are each secured to a head-block, U, by means of two bolts,so that they are held rigidly at a right angle thereto, and paralleleach to the other. The eifectof the middle bend is to produce twopoints, 1 2, of hearing or contact of the several bars with the earth.Each alternate bar A has its first bend nearer the head-block C than theadjacent bar B, and the same local relation exists between the bends ofthe second series. The tails 3 of the bars lie flat upon the earth, andare bolted to a crosspiece, D, which serves to weight that portion ofthe drag, so that it overba-lances the front end. The ends of the barsmay be thickened in lieu of the bar D, if preferred.

The operation is as follows: A clod coming in contact with the firstbend, 1, of one of the bars A, is either pulverized, pressed down, orpushed aside. In the latter case it passes laterally into the path ofthe next bar B, and comes similarly in contact with bend number 1 of thesame. The like result will ensue as before, and thus the clod will beeventually pulverized, or else reduced in size so that the flat tailpieces will press it down into the soft earth flush or nearly so withits surface.

The means or mode of attachment of. the team to the drag may be such asjud-gment'or necessity dictates.

What I claim is- 1. The improved drag, composed of a series of flat andcurved metal bars attached to a head-block, substantially as described.

2. The combination of the two series of bars A and B, each curved at twopoints, 1 2, and arranged in the alternation specified.

JNO. M. OROGKETT.

Witnesses:

JOHN J. EAKINS, H. F. HASWELL.

